Measurement of the time-integrated CP asymmetry in D-0 -> (KSKS0)-K-0 decays

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Wilkinson, G, Wilkinson, M, Williams, M, Williams, MP, Williams, M, Williams, T, Wilson, FF, Wimberley, J, Wishahi, J, Wislicki, W, Witek, M, Wormser, G, Wotton, SA, Wright, S, Wyllie, K, Xie, Y, Xu, Z, Yang, Z, Yu, J, Yuan, X, Yushchenko, O, Zangoli, M, Zavertyaev, M, Zhang, L, Zhang, Y, Zhelezov, A, Zhokhov, A, Zhong, L and Zucchelli, S (2015) Measurement of the time-integrated CP asymmetry in D-0 -> (KSKS0)-K-0 decays. JOURNAL OF HIGH ENERGY PHYSICS, 10 (10). 055-.

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Abstract

The time-integrated $CP$ asymmetry in the decay $D^0 \to K^0_S K^0_S$ is measured using $3 fb^{-1}$ of proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The flavour of the $D^0$ meson is determined by use of the decay $D^{*+} \to D^0 \pi^+$ and its charge conjugate mode. The result is \[ {\cal A}_{CP} = -0.029 \pm 0.052 \pm 0.022, \] where the first uncertainty is statistical and the second systematic. The result is consistent with Standard Model expectations and improves the uncertainty with respect to the only previous measurement of this quantity by more than a factor of three.

Item Type:	Article
Additional Information:	All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2015-030.html
Uncontrolled Keywords:	CP violation, Charm physics, Flavor physics, Hadron-Hadron Scattering
Depositing User:	Symplectic Admin
Date Deposited:	08 Jul 2016 09:12
Last Modified:	19 Jan 2023 07:34
DOI:	10.1007/JHEP10(2015)055
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3002193